Re: Intel P6 vs P7 system call performance

[Mark Mielke]

On Wed, Dec 18, 2002 at 11:10:50AM -0300, Horst von Brand wrote:
> Sean Neakums <[e-mail]> said:
> > How are system calls a new feature?  Or is optimizing an existing
> > feature not allowed by your definition of "feature freeze"?
> This "optimizing" is very much userspace-visible, and a radical change in
> an interface this fundamental counts as a new feature in my book.

Since operating systems like WIN32 are at least published to take
advantage of SYSENTER, it may not be in Linux's interest to
purposefully use a slower interface until 2.8 (how long will that be
until people can use?). The last thing I want to read about in a
technical journal is how WIN32 has lower system call overhead than
Linux on IA-32 architectures. That might just be selfish of me for
the Linux community... :-)

mark

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